Optimization method for obtaining temperature of external flow field of vehicle gas cylinder in burning state
An optimization method and gas cylinder technology, applied in design optimization/simulation, instrumentation, electrical digital data processing, etc., can solve few problems, improve safety, improve equipment reliability and personnel safety, improve equipment and The effect of personnel safety
Pending Publication Date: 2020-12-22
SOUTH CHINA UNIV OF TECH
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Problems solved by technology
At present, there are few examples of analysis and research on the external flow field of vehicle gas cylinders by means of three-dimensional numerical simulation, especially the research on the external flow field of vehicle gas cylinders under fire hazards. Obviously, this This study is of great significance to the safety of equipment, facilities and other personnel in the gas cylinder outflow field
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[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention, but the embodiments of the present invention are not limited thereto. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0034] The vehicle gas cylinder of this embodiment is a CDPW550-365-1.6 type S30408 austenitic stainless steel liquefied natural gas cylinder for vehicles produced by a certain company. The main dimensions of the gas cylinder are: the nominal diameter of the inner tank is 550mm, the length of the cylinder is 1315mm, the nominal diameter of the shell is 600mm, the length of the cylinder is 1460mm, the front and rear seals of the inner tank are oval heads, and the front and rear seals of t...
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The invention discloses an optimization method for acquiring the temperature of an external flow field of a vehicle gas cylinder in a burning state. The optimization method comprises the following steps: 1, establishing a three-dimensional model of the vehicle gas cylinder and an external flow field area thereof; 2, reading the established three-dimensional model of the vehicle gas cylinder and the external flow field area of the vehicle gas cylinder, and performing filling to generate a computational domain three-dimensional model; 3, reading the three-dimensional model of the computational domain, and performing mesh generation on the whole computational domain to generate a finite element model of the computational domain; 4, reading the finite element model of the computational domain,selecting a flame combustion model, setting an initial state and boundary conditions, and carrying out solution calculation; and 5, entering a postprocessor to observe and analyze the calculation result to obtain the temperature distribution condition of the external flow field of the vehicle gas cylinder. According to the method, a three-dimensional digital modeling and finite element analysis method is used, the temperature distribution of the external flow field area of the vehicle gas cylinder is systematically and efficiently obtained, and reliable technical support is provided for safeoperation of the vehicle gas cylinder and emergency rescue under the fire situation.
Description
technical field [0001] The invention relates to the fields of chemical equipment technology and automobile industry, in particular to an optimization method for obtaining the temperature of an external flow field of a gas cylinder for a vehicle in a burning state. Background technique [0002] Vehicle gas cylinder is a pressure vessel used to store and transport vehicle fuel gas, widely used in chemical industry and automobile industry. In recent years, with the increase of fuel costs and the enhancement of people's awareness of environmental protection, new fuel vehicles have become a hot spot in the development of automobile technology. Vehicle gas cylinders are used as devices for carrying liquefied natural gas, liquefied petroleum gas, compressed natural gas and other automotive power fuels. The number put into use increased rapidly. On the one hand, the use of vehicle gas cylinders effectively solves the problem of storage and transportation of vehicle fuel gases and g...
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IPC IPC(8): G06F30/28G06F113/08G06F119/08G06F119/14
CPCG06F30/28G06F2113/08G06F2119/08G06F2119/14
Inventor 黄思张果冉郭嘉炜易天坤
Owner SOUTH CHINA UNIV OF TECH
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